mirror of https://github.com/ARMmbed/mbed-os.git
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
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/* mbed Microcontroller Library
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* Copyright (c) 2006-2017 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "mbed_drv_cfg.h"
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#if (defined(FUMC_MTU2_PWM) || defined(DEVICE_LPTICKER))
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#include "mtu2.h"
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static int mtu2_used_cnt = 0;
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void mtu2_init(void)
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{
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if (mtu2_used_cnt == 0) {
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CPGSTBCR3 &= ~(CPG_STBCR3_BIT_MSTP33);
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}
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if (mtu2_used_cnt < 256) {
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mtu2_used_cnt++;
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}
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}
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void mtu2_free(void)
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{
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if (mtu2_used_cnt > 0) {
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mtu2_used_cnt--;
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}
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if (mtu2_used_cnt == 0) {
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CPGSTBCR3 |= (CPG_STBCR3_BIT_MSTP33);
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}
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}
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#endif
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